998275209 has 8 divisors (see below), whose sum is σ = 1344756000. Its totient is φ = 658655616.

The previous prime is 998275199. The next prime is 998275211. The reversal of 998275209 is 902572899.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 998275209 - 2²⁸ = 729839753 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (998275259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1714959 + ... + 1715540.

It is an arithmetic number, because the mean of its divisors is an integer number (168094500).

Almost surely, 2^998275209 is an apocalyptic number.

It is an amenable number.

998275209 is a deficient number, since it is larger than the sum of its proper divisors (346480791).

998275209 is a wasteful number, since it uses less digits than its factorization.

998275209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3430599.

The product of its (nonzero) digits is 816480, while the sum is 51.

The square root of 998275209 is about 31595.4934919523. The cubic root of 998275209 is about 999.4247388047.

The spelling of 998275209 in words is "nine hundred ninety-eight million, two hundred seventy-five thousand, two hundred nine".